Seiko Cal. 4561 - 637

This Spring Drive model from 1994 features a 44mm Two-Tone case. Powered by the 4561 caliber with 21j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-f3383ce60bcc]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1994

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